2008/02/28 by R. K. Rakshit, R. C. Budhani, T. Bhuvana +4
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Ferromagnetism #Heterojunction #Iron-based superconductors research #Materials science #Nanotechnology #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Proximity effect (electron beam lithography) #Superconductivity #Thermodynamics #Vortex #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.77.052509
published as Phys. Rev. B 77, 052509 (2008) · 5 figures
openalex publication_date 2008/02/28 · arxiv created 2008/03/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Thin film heterostructures provide a powerful means to study the antagonism between superconductivity (SC) and ferromagnetism (FM). One interesting issue in FM-SC hybrids, which defies the notion of antagonistic orders, is the observation of magnetic field-induced superconductivity (FIS). Here, we show that in systems where the FM domains and/or islands produce spatial inhomogeneities of the SC order parameter, the FIS can derive significant contribution from different mobilities of the magnetic flux identified by two distinct critical states in the inhomogeneous superconductor. Our experiments on nanoengineered bilayers of ferromagnetic CoPt and superconducting NbN, where CoPt∕NbN islands are separated by a granular NbN, lend support to this alternative explanation of FIS in certain class of FM-SC hybrids.